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BMC Ophthalmology

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Open Access 01-12-2018 | Research article

The Chinese Catquest-9SF: validation and application in community screenings

Authors: Zequan Xu, Song Wu, Wenzhe Li, Yan Dou, Qiang Wu

Published in: BMC Ophthalmology | Issue 1/2018

Abstract

Background

The purpose of this study was to validate the Chinese Catquest-9SF questionnaire in community screenings and explore the correlation between Catquest-9SF scores and Lens Opacities Classification System (LOCS) III cataract grading.

Methods

This was a prospective questionnaire validation study. The Catquest-9SF questionnaire was translated into Chinese and was completed by 104 Chinese cataract patients who were diagnosed in community screening. Rasch analysis was used to assess its psychometric properties, and Spearman correlation coefficient was employed to determine the correlation between Catquest-9SF scores and LOCS III cataract grading.

Results

The Catquest-9SF questionnaire demonstrated ordered response categories and unidimensionality (item fit statistics range: 0.70–1.35); the PSI and PR of the category probability curves were 2.00 and 0.80, respectively. There was a fair but statistically significant correlation between Catquest-9SF (Q6, Q7, and Q8) and LOCS III scores and a moderate correlation between Q4 in Catquest-9SF and subcapsular components for the better eye (r = − 0.546, p < 0.001).

Conclusion

The Chinese version of Catquest-9SF is a valid and reliable questionnaire in community screenings. Thus, this questionnaire may be expected to be an auxiliary tool for preliminary cataract screening use.

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Title: The Chinese Catquest-9SF: validation and application in community screenings
Authors: Zequan Xu
Song Wu
Wenzhe Li
Yan Dou
Qiang Wu
Publication date: 01-12-2018
Publisher: BioMed Central
Published in: BMC Ophthalmology / Issue 1/2018
Electronic ISSN: 1471-2415
DOI: https://doi.org/10.1186/s12886-018-0743-0

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

The Chinese Catquest-9SF: validation and application in community screenings

Abstract

Background

Methods

Results

Conclusion

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Background

Methods

Results

Conclusion

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